This Wii works just fine out of the box without all those add-ons. I wouldn't recommend spending money on any accessories until you find a game you want to play that requires them. That being said, the only additional purchase I would suggest outright is a set of component cables if you have a high definition television. Have fun!

I did pick up a set of component cables, the guy telling me i need this stuff was at gamestop, and i never trust a salesmen, but they were the only place locally that had Mario kart in stock, just wont be Nintendo without Mario kart. so i picked up the game a pair of wheels and the component cables while i was there.

as far as the sensor bar he showed me another brand one, said the one that came with the wii is junk and not big enough.

I've hear good things about the BD&A sensor bar but unless you're playing 8+ feet away from the TV there's probably no reason to get it. That and it goes through batteries like crazy being that it's wireless.